BOA lacing system: MONO-SOCK design improves stability FLYTEFOAM cushioning helps provide lightweight impact absorption: Rearfoot GEL technology improves shock absorption and creates a softer feeling at footstrike TRUSSTIC technology improves stability: Waterproof upper The sockliner is produced with the solution dyeing process that reduces water usage by approximately 33% and carbon emissions by approximately 45% compared to the conventional dyeing technology: Improves flexibility. FLYTEFOAM Technology: Improves impact absorption and creates a softer feeling at footstrike. Colour: blue